3 Lithium, sodium and potassium are in Group I of the Periodic Table. a The equation for the reaction of lithium with water is
2Li + 2H,
02LiOH+H,
i Write a word equation for this reaction.
ii Sodium reacts with water in a similar way to lithium.
Write a symbol equation for the reaction of sodium with water.
b Describe the reactions of lithium, sodium and potassium with water. In your description, write about:
the difference in the reactivity of the metals
the observations you would make when these metals react with water.